ECHOExploratory Compendium of Humanity Online

CLEF CheckThat! 2025 Task 2 — Tamil Claim Normalization

AnalyzedSmalltextContent moderationFact-checkingMisinformationPolitical communication

A CLEF CheckThat! 2025 Task 2 (tamil) dataset of 102 social media post and normalized claim pairs, collected by CLEF CheckThat! Lab organizers (2025). Each record contains social media post text containing a factual claim, normalized canonical claim statement. CLEF 2025 CheckThat! Task 2 (tamil) provides 102 pairs of social media posts and their normalized factual claims, enabling claim normalization and canonicalization research. Suitable for claim normalization, fact-checking automation, NLP text generation, multilingual claim extraction, social media fact verification.

#Claim normalization#Clef checkthat

Cite this dataset at checkthat-2025-task2-tamil.echo.directory

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Analytics

Content metrics

102 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

post lengthμ 248.941 ± 198.131
min 59max 1.6K
claim lengthμ 176.765 ± 111.683
min 23max 567
3.0
Flesch–Kincaid grade
US school grade level
23.0
Automated readability index
Frequent terms
அவரபடதபடமஊடகஙஉலகணவரரணமஉடலவழஙஇலவசஅரசஇதனஇறநஉணவஉதவதனதரதமரவமனவரலஆனதகணகநபர2020இயறஇவரடவரநடநஉயரமதமமனதஅவரதஇரவகனமசதவடணமநடகபரமபழகரவரளனர2021அதனஅளவஅவளஆதரவஆரமஎனவகடவகவசமதலன
Top hashtags
#ச6
#க4
#covid2
#fridayfact2
#gobackmodi2
#shamefuluttar2
#அரப2
#இந2
#ட2
#நக2
#வ2
#jnuவ1
#newwave1
#எத1

Computed over the full corpus.

Record

Catalog key
checkthat-2025-task2-tamil
Authors
Nakov, Preslav; Barrón-Cedeño, Alberto; Da San Martino, Giovanni; CheckThat! Lab Organizers
Year
2025
Source paper
CLEF 2025 CheckThat! Lab Task 2: Claim Normalization
DOI / arXiv
10.1007/978-3-031-88720-8_68
License
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0) (CC-BY-NC-SA-4.0)
Records
102
Languages
ta
Collected
2025 (2020s)
Tasks
Claim normalization inferred
Region
South Asia (inferred: from the language of the data)

Provenance

Originally published at
https://gitlab.com/checkthat_lab/clef2025-checkthat-lab link checked
Hosted copy
Mirrored on echo.directory on 2026-10-02, 115.1 KB across 1 files. Checksums in MANIFEST.json.

How to cite

BibTeX

@misc{echo2026,
  title  = {ECHO: Exploratory Compendium of Humanity Online},
  author = {Switzer, Braden and Zafarani, Reza},
  year   = {2026},
  url    = {https://echo.directory},
  note   = {Syracuse University}
}

@inproceedings{checkthat2025task2,
  title     = {CLEF 2025 {CheckThat!} Lab Task 2: Claim Normalization},
  author    = {Nakov, Preslav and others},
  booktitle = {CLEF 2025 Working Notes},
  year      = {2025}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Nakov, P., Barrón-Cedeño, A., Da San Martino, G., & CheckThat! Lab Organizers (2025). CLEF CheckThat! 2025 Task 2 — Tamil Claim Normalization [Data set]. https://doi.org/10.1007/978-3-031-88720-8_68

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Nakov, Preslav, et al. CLEF CheckThat! 2025 Task 2 — Tamil Claim Normalization. 2025, doi.org/10.1007/978-3-031-88720-8_68.

BibTeX · RIS · CSL-JSON

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